Robert white



WHITE, OF ROGKVILLE CENTRE, NEWI'YORILASSGNOR T0 HIM- SELE ANDJOSEPH J.WALTON, QF NEWARK, NEW JERSEY.

Letters Patent No. 105,614, dated July 19, 1870.

IMPROVEMENT IN CLAMP-NT FOR'SCREWS.

MPP-

the Schedule referred"to in`these LettemPatent and making part of the'same To all whom 'it maycoucern: i.

Be it known that A1',1`\0Bnrrr Warme, of Rockville (.lentre,- in thecounty of Queens and State of New York, have invented' -and made a newand useful Clamp-Nut for Screws; and tlie following is declared to he acorrect description of the said invention.

Heretoforc u. lock or jam-nut has been employed to prevent the turningofthe' nut upon a. screw-bolt. In the useoi' jam-nuts, there is a risk ofinjuring'tlle .,t'nread, because ilielnutl next the washer, or articleis vscrewed up, and then the jam-nut, acting against lthe tends to forcetheirst uut more ,tightly to.

Iirst nut,` place, throwing the principal strain upon thelckenut, atthe` risk4 of stripping the thread.

My invention 1s mad' for the purpose of prevent-- ing injury tothescrew-thread, byinereasing the length of the bearing, and causing thethreads ot the nut to more intimately clasp-and bind the thread upon thcholt, so as to prevent the nut working loose. Thereby .there is not anyjamming of the thread in opposite divrections,` and the threadis/preserved and the nut fstlfengthened i in the drawing- Figure 1 showsa longitudinal section of the bolt, nut, and clamp; and Figure 2 is nuend view of* the clamp-nut.

flhe' bolt a is of any usual size or character, with a. screw-thread cutupon the same. The nut b is made with the'polygonal portion 2 andconical screw-clamping portion 3. This pant 3 is divided longitudinallyliy saw-cuts or incisions 4, and

' the thread inside the nut correspondsvith that on The conicalscrew-clamping portion 3'of the nut b,

divided by longitudinal incisions, in combination with the conicalclamping-nut d, substantially as specified.

Signed by nic this 18th day of June, A. D. 1870.

A ROBT. WHITE..

`lllitnesses:

- CnAs.H. Sm'rn,

Geo. T. llNcnNnr.

